Stenosing tenosynovitis is a chronic aseptic inflammatory change of the tendon sheath caused by mechanical friction. Tendonitis is a common orthopedic disease, most often seen in manual workers, especially those who repeatedly do extension, flexion, pinching and grip operations with their fingers, more women than men are susceptible to this disease. The tendon sheath is caused by chronic aseptic inflammation due to mechanical friction of the flexor tendon stretching. Symptoms General symptoms are slow onset and are common in domestic and manual workers, and are more common in middle-aged and elderly women. Any finger can develop, but the thumb, middle finger and index finger are the most common. The main symptoms are limited pain on the palmar side of the metacarpophalangeal joint and restricted finger movement. As the tendon sheath stenosis increases and the tendon becomes enlarged in a gourd shape after compression, the enlarged part will be difficult or impossible to slide through the narrowed tendon sheath, then the finger stays in the extension or flexion position, and the phenomenon of interlocking and popping occurs. During physical examination, a ring-like nodule can be palpated at the local pressure of the patient’s metacarpal head, and a popping sound can be felt at the nodule when the finger is flexed and extended, because the tendon sheath is narrowed and the tendon gliding is blocked, which is similar to pulling the trigger when the finger is flexed with force, accompanied by popping or bouncing and obvious pain, so the disease is also called trigger finger, popping finger, popping finger, etc. According to the medical history, clinical symptoms and signs, the diagnosis can be made by the appearance of the trigger finger popping. The tendon sheaths of the fingers and wrists are susceptible to tenosynovitis because they are often engaged in tedious daily household activities. 2, special occupational groups of typists, instrumentalists, cargo handling or the need for prolonged computer operations, because of the repeated use of the wrist, fingers, easily lead to strain trauma, and therefore susceptible to the development of this disease. This disease is mostly seen in the computer operating people, so “mouse hand” or “keyboard hand” called. Treatment 1.Local closure treatment: Applicable to patients with initial onset, obvious swelling and pain, and patients with short duration of the disease. 2.Acupuncture treatment: applicable to patients with repeated onset, obvious pressure and popping and patients with long duration of disease. 3.Surgical treatment: the same as the indications for acupuncture treatment. 1.Closure treatment: Injecting drugs (anesthetic + hormone) in the affected area, either around the painful point or inside the tendon sheath, personally I think the efficacy of injection inside the sheath is more accurate. 2.Acupuncture treatment: under local anesthesia, the nodule of the affected finger is cut off by acupuncture, that is, the A1 carriage of the affected finger is cut off. 3.Surgical treatment: make an incision at the transverse palm under anesthesia, separate the tendon sheath with a vascular clamp, cut the A-slide and remove part of the A1-slide. Recommended treatment: Acupuncture treatment with immediate effect. The pathogenesis of flexor tenosynovitis is at the beginning of the fibrous sheath of the finger flexor tendon opposite the metacarpal head (i.e., A1 carriage), where the thick circular fibrous tendon sheath forms a relatively narrow entrance to the sheath with the metacarpal head. Although the tendon sheath of the thumb is connected to the bursa of the wrist, there are two seed bones at the metacarpal head with narrow passages. When grasping objects, the tendon slides and strains, and at the bursa of the metacarpophalangeal joint, the tendon bends and rubs the most, and the tendon sheath is easily damaged by the back and forth extrusion of objects and the metacarpal head, which gradually grows and causes narrowing.